摘要
以化学氧化为主的水自净化过程依赖于惰性的溶解氧分子与结构稳定的新污染物(emerging contaminants,ECs)间随机且无序的相互作用,导致水自净化效率极低.本研究提出了一种创新策略,通过制备具有极性强化的双反应中心催化剂(LLWR-FMS),构建催化剂表面吸附的ECs与水中内源性介质间电子传递通道,强化二者间相互作用,能有效扩增水体自净力.实验表明,在天然江水体系中,LLWR-FMS扩增型水自净化体系能去除水中90%以上的环丙沙星,且表现出极佳的适应性和良好的稳定性.在仅0.1 mmol/L的H_(2)O_(2)微调控下,LLWR-FMS体系对江水体系中盐酸四环素的去除率在15 min内甚至能提高约50%.
Water self-purification dominated by chemical oxidation process depends on the random and disordered interactions between inert dissolved oxygen molecules and structurally stable emerging contaminants(ECs),resulting in an extremely low purification efficiency.This study proposes an innovative strategy by preparing a polarity-enhanced dual reaction centre catalyst(LLWR-FMS)and constructing the electron transfer channel between adsorbed ECs and the endogenous media in water.As a result,the interaction between them is enhanced,which effectively enhances the selfpurification capacity of water.Specifically,in actual river water,the LLWR-FMS system can remove over 90%of ciprofloxacin and shows good adaptability and satisfactory stability.Under the trigger of only 0.1 mmol/L H_2O_2,the removal rate of tetracycline hydrochloride can increase by~50%within 15 min.
作者
曹文锐
丘婷
李容
刘溢
郑乐熙
胡春
吕来
Wenrui Cao;Ting Qiu;Rong Li;Yi Liu;Lexi Zheng;Chun Hu;Lai Lyu(Institute of Environmental Research at Greater Bay,Guangzhou University/Ministry of Education Key Laboratory of Water Quality Safety in Pearl River Delta,Guangzhou 510006,China;Department of Chemistry,City University of Hong Kong,Hong Kong 999077,China;School of Environmental Science and Engineering,Guangzhou University,Guangzhou 510006,China)
出处
《中国科学:化学》
北大核心
2025年第2期530-538,共9页
SCIENTIA SINICA Chimica
基金
广东省重点领域研发计划项目纳米科技专项(编号:2023B0101200004)
国家自然科学基金(编号:52122009,52070046,52350005)资助项目。
关键词
水自净力
双反应中心
新污染物
微量H_(2)O_(2)
低能耗
water self-purification capacity
dual reaction center
emerging contaminants
trace H_(2)O_(2)
low consumption
